# US 10,374,194 B2 · Flexible display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,194 B2 - Document ID: US10374194B2 - Status: Granted - Kind: B2 - Application number: 15/851,427 - Filed: 2017-12-21 - Published: 2018-04-26 - Granted: 2019-08-06 - Earliest claimed: 2015-08-13 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: HaeJoon Son; SieHyug Choi; JuhnSuk Yoo; MoonGoo Kim; Jehong Park; Chiwoong Kim - Web page: https://patentgrep.com/patent/US10374194B2 ## CPC - H10K 77/111: {Flexible substrates} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants} - H10K 59/873: {Encapsulations} - H10W 90/00: Package configurations - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A flexible display device comprises a flexible substrate including a display area and a non-display area; a display layer in the display area on a first surface of the flexible substrate; a polarizing plate on the display layer; and a cover coat in the non-display area on the first surface of the flexible substrate, the cover coat including a first end portion overlapping with the polarizing plate. At least a portion of the non-display area of the flexible substrate and the cover coat are bendable in a bending direction. ## Claims ### Claim 1 A display apparatus, comprising: a substrate including a display area and a non-display area, the non-display area including a first area, a bend area, and second area, the second area bent behind the first area via the bend area; a display layer on the substrate; an adhesive layer on the display layer; a polarizing layer on the adhesive layer; a cover layer on the polarizing layer; a drive chip connection member on the second area; a wiring routed from the first area to the second area; a cover coating layer covering the bend area and having an edge portion between the display layer and the adhesive layer, wherein the cover coating layer is disposed apart from the cover layer, and wherein the cover coating layer entirely covers a side surface of the display layer and covers a part of an upper surface of the display layer. ### Claim 2 (depends on 1) The display apparatus of claim 1, further comprising a first back plate and a second back plate, wherein the first back plate is located below the substrate of the display area, and the second back plate is located below the substrate of the second area. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein a bottom surface of the first back plate faces a top surface of the second back plate. ### Claim 4 (depends on 3) The display apparatus of claim 3, further comprising a supporting member located between the first back plate and the second back plate. ### Claim 5 (depends on 1) The display apparatus of claim 1, wherein the wiring comprises at least one of titanium and aluminum. ### Claim 6 (depends on 1) The display apparatus of claim 1, wherein the wiring electrically connects the display layer disposed in the display area to the drive chip connection member disposed in the second area. ### Claim 7 (depends on 1) The display apparatus of claim 1, further comprising a second adhesive layer located between the polarizing layer and the cover layer. ### Claim 8 (depends on 1) The display apparatus of claim 1, wherein the drive chip connection member comprises at least one of a tape carrier package (TCP) and a chip on film (COF). ### Claim 9 A flexible display device, comprising: a substrate having a first portion, a bend portion, and a second portion; a display layer disposed on the first portion of the substrate; an adhesive layer on the display layer; a polarizer on the adhesive layer; a cover layer on the polarizer; a connection member on the second portion of the substrate; a wiring extending between the connection member and the display layer on the substrate; and a cover coating layer on the bend portion of the substrate, wherein a first end portion of the cover coating layer extending under the adhesive layer and disposed on the first portion of the substrate, wherein the cover coating layer disposed on the wiring in the bend portion of the substrate, wherein the cover coating layer is disposed apart from the cover layer, and wherein the cover coating layer entirely covers a side surface of the display layer and covers a part of an upper surface of the display layer. ### Claim 10 (depends on 9) The flexible display device of claim 9, wherein the cover coating layer has a first thickness in the first portion and a second thickness in the bend portion, the first thickness being different from the second thickness. ### Claim 11 (depends on 10) The flexible display device of claim 10, wherein the first thickness is smaller than the second thickness. ### Claim 12 (depends on 9) The flexible display device of claim 9, wherein the cover coating layer is formed by coating an organic resin before disposing the adhesive layer. ### Claim 13 (depends on 9) The flexible display device of claim 9, further comprising a first back plate under the first portion and a second back plate under the second portion. ### Claim 14 (depends on 13) The flexible display device of claim 13, wherein the first back plate and the second back plate face each other due to a bent configuration at the bend portion. ### Claim 15 (depends on 14) The flexible display device of claim 14, further comprising a supporting member located between the first back plate and the second back plate. ### Claim 16 (depends on 15) The flexible display device of claim 15, wherein the supporting member is attached to at least a portion of the first back plate or the second back plate. ### Claim 17 (depends on 9) The flexible display device of claim 9, further comprising a second adhesive layer located between the polarizer and the cover layer. ### Claim 18 (depends on 9) The flexible display device of claim 9, wherein the connection member comprises at least one of a tape carrier package (TCP) and a chip on film (COF).